Sometimes when I drive past an electronic tollway collection sensor, I wonder about the amount of data it must generate. I’m no expert on such technology, but at a minimum, the RFID sensor has to read the chip in your car, and log the date and time plus your RFID info, and then a camera takes a picture to catch any potential violators. Now multiply that data times the hundreds of thousands of cars that drive such roads every day, times the number of sensors they pass, and I’m quite sure this number exceeds several million messages per day. (more…)